Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c7a577b9f26d2a46d1d51626a92ea3dad5aa6b8ba48c9a55d69b0ccae96020f1' 
  AND token = '/zt16tKH3P91v4U4fTFJ7fFzgEncSGIw90qg9SBEdOk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}